The Grip strength is measured by:

Question

Accepted Answer

The correct option is (1):
The correct instrument used to measure grip strength is a **Dynamometer**. This device is fundamentally a force-measuring instrument, where the Greek root "dynamo" signifies power or force. Specifically, a handheld dynamometer, such as the widely accepted Jamar brand, is utilized to objectively quantify the maximal isometric strength generated primarily by the hand and forearm flexor muscles. The measurement of grip strength is considered a key clinical indicator of a person's general upper body strength, nutritional status, and overall functional capacity, which is vital for tracking progress during physical rehabilitation or assessing health in various populations, including athletes and the elderly.

The incorrect option is (2):
**Manuometer** is not a standard, recognized term or instrument for precisely measuring hand grip strength in the field of physical education, sports medicine, or clinical science. While the Latin prefix 'manu-' refers to the hand, the actual device accepted as the gold standard for this measurement is the dynamometer. Choosing a non-standard or invented term, even if it seems logically related to the hand, is incorrect when a specific, standardized instrument name exists.

The incorrect option is (3):
A **Spirometer** is an instrument used exclusively in respiratory physiology and medicine. Its function is to measure **lung function**, including the volume of air an individual can inhale or exhale, and the rate at which they can do so. This measurement is crucial for diagnosing and monitoring respiratory conditions. Since a spirometer deals with pulmonary air capacity and has no relation to muscular force or strength, it is an incorrect choice for measuring grip strength.

The incorrect option is (4):
A **Flexometer** is a tool designed to assess an entirely different component of fitness: **flexibility** or the range of motion (ROM) of a joint. It is used to quantify the angular movement a person can achieve at a joint, such as the hip or trunk, often utilizing a gravity-dependent mechanism or digital sensor. As the question asks for a measure of *strength* (force), not range of *movement* (angle), the flexometer is unsuitable for this purpose.